Should private tutoring which are used in South Korea to get better grades be also done in U.S?

I've heard that president Obama has made a speech talking about Korea's education systems, and he told the people that the students will be studying whlie he is making that speech, but that's kind of a nonsence. I'm now a student of South Korea and my private tutoring ends at 11:30 pm, and I go to sleep between 12-2. Do you think that this is a thing to endure to get a nice grade? What should be prioritized? Physical&mental growth? Or an A+?

Apr 2 2013:
Fritzie&george: I didn't know that it also took place in U.S.
Though it is not the level which are taking place in Kor. What I wanted to talk about was excessive tutoring and private academies.

Apr 2 2013:
As Fritzie notes - it always has existed here. Maybe the real issue should be - Have Americans lost contact with reality. There are only a few countries in the world where fifty percent of students go to college or thirty percent get degrees. Should everyone get a high school deploma? What does it mean? What's wrong with trade schools? How about other ways to learn?